Hi!I'm trying to get an SPH0645 microphone to send sound data to my STM32F411 with HAL_I2S_Receive(), but the data I receive is not correct. According to the data sheet, the microphone gives 24 bits data on a 32 bit frame, with 24 bits containing dat...
I would like to use the digital interface (not sure what that means) of an existing system control computer to control the recording (start & stop, perhaps gain etc.) from digital MEMS microphones (I2S or PDM). Which hardware options do I have, and h...
Please help me. I am trying to configure pins for reading the data coming from 2 microphones mount in a X-NUCLEO-CCA02M2. To read the data I am using a NUCLEO-F401RE. I read all the documentation for tthe expansion but nothing is working. In this mom...
I am using a STM32-NUCLEO-F401RE and expansion board x-NUCLEO-CCA02M1. I am not using the library provide by STM. I trying to understand which serial communication protocol is better for this type of application and why it is better.Can someone help ...
Hello,I'm using an STM32 M4 for recording short audio signals through the I2S interface and I write the PCM to an SD card. To check that everything is fine I have recorded pure tones (1kHz or 2kHz). By doing that I noticed in some recordings (not all...
I'm looking for instructions on interfacing MP23DB01HP Microphone to Cortex-A7 on STM32MP157 through I2S bus.The application note AN5027 is a good starting point but does not mention how to integrate with Linux on Cortex-A7.I've modified the devcie t...
Hi, I have an application where I am using NUCLEO F401RE interfaced with Nucleo-CCA02M2 and a sensor. I am running two tasks one is reading data from sensor via I2C and other reading audio from I2S via DMA. THe sensor uses an interrupt line which w...
Hello everyone,I'm interfacing a digital MEMS microphone with a stm32l152re mcu cortex M3 using I2S with DMA In order to measure sound pressure level. the communication is based on acquiring PDM ( Pulse density modulation) values that represents the...
Hello,I am trying to understand the PDM2PCM conversion using I2S as the receiving protocol. Does anyone have an easy example for generating a single PCM sample from the PDM data bits? I am having some difficulty doing this using the VM3000 PDM MEMS...
Hi,I am trying to interface an I2S MEMS microphone (SPH0645) with the STM32F446RE MCU for keyword spotting application. The mic produces PCM signal. Unfortunately, I have no idea where to start on receiving and processing the data from this MEMS mic...